BenQ Dw160 unable to read all DVDs but can read CD-R

Sorry for my english I’am french canadian.)

I buy this drive last January 6.
I installed the drive correctly today.
I never got the chance to test it before today

Strange problem here
I can read CD-R an burn CD-R BUT
I cannot read/burn DVD, all of them : DVD-movies , DVD-R, DVD+R …

Windows XP SP2 reconize the drive as BenQ DVD DD DW1620
when i inserted a DVD, windows ask me for a disc or show a blank disc!!!

I updated the firmware to B7T9 and I still cannot read DVD but I burned successfully CD-R.

NERO show all correct and expected features for the drives.

NERO Tools show only 40X reading/writing speed nothing for DVD reading /writing. (see pics)

i installed the Nvidia IDE driver supplied with DFI CD package nforce4.
I tried about 10 DVD of differents types.

I also remove Nforce4 IDE SW driver, no chance still problematic.

I tried the drive in a another computer with intel motherboard with windows Xp sp1 and it’s not working either.

It’s still show blank DVD for all my DVDs. (the green LED blink and stop.)
All CD-R are OK.

here waht nero tools show
(no 8x/4x reading/writing, only 40x! in bold)

Drive Information

Drive : BENQ DVD DD DW1620
Type : DVD-R/RW Combo Drive
Firmware Version : B7T9
Buffer Size : 2 MB
Date : ?
Serial Number
Vendor Specific :
Drive Letter : N:
Location : 2:1
Mechanism : Tray
Read Speed : 40 X
Write Speed : 40 X

Read CD Text : Yes
Return C2 Pointers : No
Read CD-R : Yes
Read CD-RW : Yes
Read DVD-ROM : Yes
Read DVD-RAM : No
Read DVD-R : Yes
Read DVD-RW : Yes
Read DVD+R : Yes
Read DVD+RW : Yes
Read Digital Audio : Yes
Read CD+G : Yes
Read VideoCD : Yes

Write CD-R : Yes
Write CD-RW : Yes
Write DVD-R : Yes
Write DVD-RW : Yes
Write DVD+R : Yes
Write DVD+RW : Yes
Write DVD-RAM : No
Buffer Underrun Protection : Yes
Mount Rainier : No
Modes : Packet, TAO, DAO, SAO, RAW SAO, RAW SAO 16, RAW SAO 96, RAW DAO 16, RAW DAO 96

Region Protection Control : RPC II
Region : None
Changes User : 5
Changes Vendor : 4

please help me.


my system :
Windows XP SP2
DFI lan party nforce4 ultra-d
msi geforce 6600 GT
SEAgate 80 Gb S-ATA 7200.7

I think maybe you to select a region code. Right click on My Computer,left click on the Properities,left click on Hardware tab, left click on Device Manager,left click on the + box for CD/DVD Rom Drives, right click on the Benq 1620,left click on properties, left click on the DVD Region tab, scroll to Canada and click on it, click on OK. Now your drive should reconize DVDs.

I made the change and it’s not working for all types of DVDs(movies, data, DVD-R, DVD+R, DVD-RW…)

what can i do?